Excavator.



W. B, HARD. BXGAVATGR.

APPLICATION FILED DB0.27,1904.

5 SHEETS-SHEET 1.

PATENTED 00T. 31, 1905.

5 MIRETS1-SHEET 2.

W. B. HARD.

EXCAVATOR APPLIGATIONJILBD Maw/,1904.

PATENTED OCT. 31, 1905.

W. B. HARD.

BXCAVATOR.

APPLICATION FILED DBO. 27,1904.

5 SHEETS-SHEET 3.

'l @WM f2. WMM 14M!! @wom/m3 Y MC/fZW/M No. 803,227. PATENTED OCT. 3l,1905. W. B. HARD.

EXCAVATOR.

APPLIUATION FILED D110. 27, 1904.

5 SHEETS-SHEET 4.

@www/Who@ U14/MM f3. Www' 32511 abbo/m11 No. 803,227. PATENTED 00T. 31,1905. W. B. HARD.v BXCAVATOR.

APPLICATION FILED DBG.27,1904.

5 SHEETS-SHEBT 5.

` 'UNITED STATES .PATENT onnion.

EXCAVATOR.

Specification of Letters Patent.

Patented. Oct. 31, 1905.

Application filed December 27, 1904. Serial No. 238.381.

lTo @ZZ whom it may concern:

Be it known that I, WILLIS B. HARD, a citi- Zen of the United States ofAmerica, and a resident of Meridian, in the county of Lauderdale andState of Mississippi, have invented certain new and useful Improvementsin Excavators, of which the following is a specification.

The object of the invention is to provide a self-loading andself-dumping wagon, this work at present necessitating the use of twoseparate machines-viz., one for loading and one for dumping earth orother excavated material.

My machine is adapted to load itself, carry the material to any desiredpoint, and then dump it, the various operations being under the controlof a single operator. It is comparatively light in weight, thus largelyreducing the number of animals necessary for draft purposes, isinexpensive to construct and repair, and is adapted to eflciently tillVthe place of the cumbersome and expensive machinery now used for thesame purpose. It is specially adapted for the construction andmaintenance of streets and highways.

The organization comprises a scraper for digging the earth, an endlessbelt for conveying it to a wagon-box for receiving it, and dumping-doorsin the bott-om of the box for discharging it thereafter, a drivingmechanism operated by the rear wheels for driving the belt, andmanually-operated devices for elevating or depressing the scraper foroperating a throw-out mechanism for the beltdriver and for controllingthe dumping-doors, the whole being mounted upon a vehicle adapted to bedrawn by horses.

More particularly the machine consists of a scraper for digging theearth, a wagon-box, an endless belt for conveying the earth to said box,dumping-doors for the box hinged, respectively, at the front and nearthe middle of said box, a winding-shaft, chains connecting said doors tothe winding-shaft,a sprocketwheel fixed upon the shaft, a secondsprocketwheel at a distance from the iirst and adapted to be manuallyrotated, an endless sprocketchain connecting the two wheels, a pawl andratchet for holding the sprocket-wheels at different degrees ofrotation, a pair of wheels for the vehicle, a pair of cylindricalbearings having each a reduced portion extending toward each otherthrough each of the opposite sides of said box and each having furtherreduced portions, a tube connecting said bearings by having its endsfitting the respective further-reduced portions, an axle for saidvehicle-wheels passing through said bearings, tube, and box in adust-proof manner, an other correlated features, as described.

In the drawings, wherein like numerals of reference indicate like partsin all the views, Figure 1 is a side elevation of the complete machine.Fig. 2 is a plan of same, with conveyer-belt removed, on a large scale.Fig. 3 is a front elevation of same, on a large scale, withconveyer-belt and sprocket-chain removed. Fig. 1 is a side elevation ofa moditied form of dumping-rigging. Fig. 5 is a plan of same. Fig. 6 isan end view of one of the belt-tighteners. Fig. 7 is a side v-iew ofsame. Fig. 8 is a section through line A B, Fig. 1, as viewed from thefront of the vehicle, the axle and some of its adjnncts not being shownin section. Fig. 9 is a section through line C D, Fig. 8. Fig. 10 is asection through line E F, Fig. 3, showing rack and pinion. Fig. 1l is arear elevation of same, not in section. Fig. 12 is a section throughline G H, Fig. 3, showing ratchet- Wheel and lever. Fig. 13 is amodified form of wheel and lever. I will Iirst describe the receivingand dumping box. A main carrying-frame l, having an operatorsstanding-platform 2 upon its forward end, a body or box portion 3 at itsrearward end, said box being provided below with dumping-doors 4 and 5,hinged, respectively, at 6 at the front and 7 near the middle ofsaid-box 3, supporting-chains 8 and 9, attached to doors 4 and 5 byeyebolts 10 and 11 and to a winding-shaft 12, journaled upon bearings13, mounted upon the sides Vof the box 3, to which they are secured bymeans of the lag-screws 14, the shaft being provided at one extremitywith a sprocket-wheel 15. A sprocket-chain 16 connects the wheel 15 witha similar wheel 17, mounted upon a shaft 18, which is journaled in abearing 19, mounted upon a standard 20, attached to the framework 1.Mounted upon the shaft 18 is a ratchetwheel 21 anda hand-wheel 22,preferably provided with a handle 23.

Running' transversely of the bottom of the box 3 is a spreader 24 withbeveled edges25 for shedding the dirt and gained out below at 26, so asto form stops for the dumping-doors 4 and 5.

I will now describe the rear-axle support. Just below the side membersof the frame l and at about the middle of the box 3 are IOO IIO

bearings 27, (clearly shown in Fig. 8,) attached to the box by bolts 25,each bearing having a reduced portion 28 where it passes through thesides of the box 3 and a further reduced portion 29 within the box 3,over which is adapted to fit a pipe 36. Journaled in the bearings 27 andpassing' through the pipe 36, which protects it from dirt, is a rearaxle 32, having' one end 33 squared, so as to fit the hub 34 of the rearwheel 35, fixed to the axle 32, and a threaded extremity 36, iitted witha nut 37 and washer 38 and another washer 39 at the inside of thewheel-hub 34, whereby the axle is securely clamped within said hub. Theother rear wheel 46 has a hub 41, fitted with a box 42, within which isjournaled the tapered portion 43 of the axle 32, this end of the axlealso having a threaded extremity 44, a nut 45, and a washer 31.

The object of the following construction is to convert the loose wheel46 into a driver when the conveyer-belt is in operation, so as to gainthe benet of the additional adhesion. Rigidly attached to the axle 32close to the inside face 45 of the hub 41 is a ratchet-wheel 46, Figs. 8and 9, and surrounding the hub 41 is a band 47, provided with a lug 48,to which is attached a shouldered bolt 49, secured by the nut 56.Pivoted upon the bolt 49 is a dog 51, which engages the teeth 52 of theratchetwheel 46 when the machine is drawn forward, but rides the teethwhen the wheel 46 is turned backward. The ratchet-wheel 46 is fixed onthe shaft 32, and the dog 51 is carried by the hub 41. A spring 52',attached tothe lug 48, holds the dog 51 in engagement with the teeth 52of the wheel 46. This construction permits the vehicle to run backwardmore easily.

The endless-belt-conveyer construction is as follows: Attached to theside members of the frame 1 upon both sides by bolts 53 are brackets 54,having pins 55, upon which are pivoted the arms 56, within the uppervends of which is journaled the shaft 57, rigidly mounted upon which atits central portion is a drum 58 and at one extremity a pinion 59, whichmeshes with a spur-gear 66, attached to the spokes 61 of the rear wheel35 by bolts 36, passing through lugs 37'. About midway of the arms 56are attached pins 62, upon which are pivoted the reach-rods 63 64. Nearthe forward end of the machine and within convenient reach of theoperator and near the other controlling devices is a lever 65, providedwith a handle 66 at the top and a latch 67, pivoted upon the lever 65 bythe pin 68 and having a lip 69, adapted to rest in one or other of thenotches 76 of the stationary q uadrant 71, whereby the lever 65, andthrough it the reach-rods 63 64, may be locked in forward or backwardpositions. rlhe lever 65 is mounted upon a shaft 72, having a secondlever 73 at its opposite end, upon which is pivoted the reach-rod 64.The shaft 72 is mounted'in bearings 74, which are attached to the frame1 by bolts 75. Journaled upon the shaft' 57 is a frame composed of twoparallel bars 76, which are bent so as to meet near their lowerextremities, where they are riveted or otherwise securely fastenedtogether at 77, when they are again bent outward and thence forward andform bearings fora shaft 78, upon which is mounted a drum 79. Thereafterthey are again bent inward and then outward and attached by bolts 86 tothe reinforcing angle-irons 81 of the scraper 82, which is otherwise ofthe ordinary construction.

An endless conveyer-belt 166 passes over both of the rollers 58 and 79,which are carried by the frame 76, and its driven side (the upper one)is at all times further supported by a series of rollers 161, havingjournals 102 at both ends, which pass through bearings 163, attached tothe sides of the frame 76 by rivets or bolts 164.

The elevator for the scraper consists of the shaft 78, extended at bothends beyond the side bars 76, and upon these extensions are pivoted theforked ends 83 of an elevating and depressing bar 84, provided upon oneface at the top and for some distance down with a rack 85, which mesheswith a pinion 86, mounted upon a shaft 87, and is held in mesh with saidpinion at all times by a cuff 88, Figs. 16 and 11, which is pivoted uponthe shaft 87. The shaft 87 is journaled in a bearing 89, (see Fig. 3,)attached to the standard 96, mounted upon the frame 1, and is providedwith a handwheel 91 with a handle 92 and a ratchetwheel 93.

Each of the bearings 19 and 89 has a lug 94, Figs. 12 and 13, carrying apin 95, fulcrumed upon which is a lever 96, having a tooth 97, whichrides the teeth of the ratchetwheels 21 and 93 when the shaft 18 isturned over forward and the shaft 87 backward, but catches in same andprevents their rotation in the opposite directions. An extension 98 ofeach of the levers 96 forms a handle by means of which its tooth may beraised out of engagement with the corresponding ratchet-wheel 21 or 93.In Fig. 13 is shown a modified form of ratchet-wheel 93. In place of theteeth it is provided with a series of notches O upon its rim, and thetooth 97 is modified in shape so as to fit into same, this constructionaffording a means of locking the shaft 87 against rotation in eitherdirection.

Under the forward part of the machine is an axle 165, of inverted-Ushape, carrying the wheels 166. To the center and at right angles to thelupper part of the axle 165 is secured a pole 167, (a portion only ofwhich is shown on the drawings,) to which the draftanimals may beharnessed in the ordinary manner. Above the pole 167 and rigidly securedto same and to the axle 165 is the lower member 168 of a fifth-wheel,the upper member of which, 169, is secured to the body 1 of lIO themachine. The recesses 7 7 upon either side of the frame 76, where theside members meet at 77, are provided, so as to permit the machine to beturned within as narrow a radius as possible. t rlhe wheels 106 may beal- .c lowed to rub against the belt 106 and deflect the sameconsiderably without damage to it when the machine is being turnedaround.

In order to retain the belt 100 at a proper degree of tension, thedevice shown in Figs. 6 and 7 is used. The side bars of the drumcarryingframe 76 are provided at -the top with forked ends 110. A block 111,having a bearing 112 for the shaft 57 and provided with anges 113 at topand bottom, 'is adapted to slide in the opening so formed and is heldfrom slipping out by the said lianges 113. To the block 111 is rigidlyattached a screw 114, extending endwise from same and at right angles tothe bearing 112 and passing' freely through a hole in the center of acap 115, which is recessed to lit over the forked ends 110. Exterior tothe cap 115 is a nut 116 upon a screw 114, whereby the block 111 may bedrawn outward, so as to put the necessary tension upon the belt 100.`When by reason of excessive stretching of the belt from constant usethe block reaches the limit of its outward travel, it is returned to theother extreme position and the belt taken out, cut, and spliced, so asto reduce its length. The adjustment described will, however, proveadequate under all ordinary conditions without any necessity forshortening the belt.

In Figs. 4 and 5 is shown a modified form of mechanism for operating thedumpingdoors, showing outline of the box 3 in dashes, in the latterfigure the doors being also shown in dots and dashes. In this case thedoors are attached to parallel strips of metal 116 by bolts 117, thesestrips 116 being rigidly connected at one end to two shafts 118 118, onefor each door, and each of the shafts 118 having rigidly attached to itat one extremity and exterior to the box 3 an upright lever 119, to theupper ends of both of which levers 119 is pivoted a single bar 120,pivoted by a pin 121 to a single reach-rod 63. The shafts 118 118loscillate in bearings 122 122, secured by bolts 123 to the under sidesof the box 3.

InA operating the machine the doors 4 and 5 are closed at starting bywinding up the chains 9 and 16 through the medium of the winding-shaft12, its sprocket-wheel 15, the chain 16, the sprocket-wheel 17, and itsshaft 18 by turning the hand-wheel 22 over in a forward direction, whenit is held by means of the ratchet-wheel 21 and its lever 96.

The scraper 82, and with it the lower end of the frame 76, is thenlowered by its own weight and that of the connected parts (the lower endof the belt being at all times in fixed relation to the scraper) to therequired depth, by means of the bar 84, with its rack 85 and the pinion86, by raising the lever 96 and controlling the fall byvgrasping thehand-wheel 91 and allowing the same to rotate slowly in a forwarddirection. The lever 96 is then released and prevents any furtherdownward movement of the' scraper. As the machine moves forward by meansof the spur-gear 60, attached to the rear wheel 35, the pinion 59, andwith it the drum 58, is caused to rotate in a backward direction,causing the upper part of the belt 100 to travel upwardly and rearwardlyto a point above and slightly forward of the center of the box 3. Theexcavated material passing over the whole length of the scraper 82 andthence upon the lower end of the belt 100 is thus continuously conveyedto the box 3, into which it is discharged by the continued motion of thebelt. When the box has been fully loaded, the lever 65 after the latch67 has been released from the rear notch inthe quadrant 71 is movedforward and the latch engaged with the forward notch of the quadrant 71.By this movement the shaft 72 is rotated through a small arc, and thereach-rods 63 64, and through them the arms 56, are drawn forward. Therise of arc through which the latter move as they pivot upon the pins 55carries their upper ends upward as well as forward. They thus convey thesame movement to the shaft 57, with its pinion 59, and raise the latterout of engagement with the spur-gear 60, the frame meanwhile pivotingupon the journals 78 and the bar 84 upon the shaft 87 through the mediumof the rack 85, the pinion 86, and the cuff 88. The lower end of theframe 76 is then raised by turning the wheel 91 and connected parts overin a backward direction, thus also raising the lower end of the belt100, together with the scraper, into a position in which the latterrests within the space beneath the U-shaped axle.

The machine having next been moved to the TOO IOS

desired point for dumping the load, the lever 96, now in engagement withthe ratchet-wheel 21, is raised, releasing the wheel 22. The weight ofthe load in the box 3 now opens the dumping-doors 4 and 5 downwardly,meanwhile rotating the winding-shaft 12 in a backward direction as thechains 8 and 9 unwind from the shaft, the shaft 18, through the mediumof the chain 16, pai-taking, meanwhile, of the same motion. Thedirection in which the doors fall and the position in which they arehung enables the machine to be withdrawn readily from the dumped loadand also preserves them from possible injury from striking immovableobstructions which may be upon the ground, as they will tilt upwardlyupon their hinges and pass over such obstructions. The load having beendumped, the doors are again closed, and the machine is immediately readyfor a repetition of the same series of operations.

It will be readily seen from the foregoing speciiication that themachine may be quickly IIO and conveniently handled by a singleoperator, resulting in great economy of time and labor.

I claim as my invention- 1. An excavator consisting of the combinationof a scraper for digging' and receiving earth, a wagon-box, a conveyerfor receiving the earth from the scraper and carrying the earth to saidbox, dumping-doors in the bottom of the box for discharging the earththerefrom, a vehicle having wheels, a driving mechanism operated by saidwheels for driving said conveyer, a manually-operated device forelevating and depressing said scraper, a releasing mechanism for theconveyer, a manual device for operating the same, and a manuallyoperateddevice for controlling said dumpingdoors.

2. In an excavator the combination of a scraper for digging the earth, awagon-box, an endless belt for conveying the earth to said box,dumping-doors for the box hinged respectively at the front and near themiddle of said box, a winding-shaft, chains connecting said doors to thewinding-shaft, a sprocketwheel fixed upon the shaft, a secondsprocketwheel at a distance from the first and adapted to be manuallyrotated, an endless sprocketchain connecting the two wheels, and a pawland ratchet for holding the sprocket-wheels at different degrees ofrotation.

3. In an excavator the combination of a scraper for digging the earth, awagon-box, an endless belt for conveying the earth to said box,dumping-doors for the box hinged respectively at the front and near themiddle of said box, a winding-shaft, chains connecting said doors to thewinding-shaft, a sprocketwheel fixed upon the shaft, a secondsprocketwheel at a distance from the first and adapted to be manuallyrotated, an endless'sprocketchain connecting the two wheels, a pawl andratchet for holding the sprocket-Wheels at different degrees ofrotation, and a spreader with beveled edges on its upper portion, andoverlapping one door at that edge farthest from its hinges, and theother door at that edge which is connected to its hinges.

4. In an excavator the combination of a scraper for digging the earth, awagon-box, an endless belt for conveying the earth to said box,dumping-doors for the box hinged respectively at the front and near themiddle of said box, a winding-shaft, chains connecting said doors to thewinding-shaft, a sprocket- `wheel fixed upon the shaft, a secondsprocketwheel at a distance from the first and adapted to be manuallyrotated, -an endless sprocketchain connecting the two wheels, a pawl andratchet for holding the sprocket-wheels at different degrees ofrotation, a pair of wheels for the vehicle, a pair of cylindricalbearings, having each .a reduced portion extending toward each otherthrough each of the opposite sides of said box, and each having furtherreduced portions, a tube connecting said bearings by having its endsfitting the respective further reduced portions, and an axle for saidpair of Wheels passing through said bearings, tube and box in adust-proof manner.

5. In an excavator, the combination of' a scraper for digging andreceiving earth, a wagon-box, a conveyer for receiving the earth fromthe scraper and carrying the earth to said box, dumping-doors in thebottom of the box for -discharging the earth therefrom, a vehicle havingwheels, a driving mechanism operated by said wheels for driving saidconveyer, a manually-operated device for elevating and depressing saidscraper, a releasing mechanism for the conveyer, a manual device foroperating the same, a manually-operated device for controlling saiddumping-doors, a pair of wheels for the vehicle, a pair of cylindricalbearings, having each a reduced portion extending toward each otherthrough each of the opposite sides of said box, and each having furtherreduced portions, a tube connecting said bearings by having its endsfitting the respective furtherl reduced portions, and an axle for said'wheels passing through said bearings, tube and box in a dustproofmanner.

6. In an excavator consisting of the combination of a scraper fordigging and receiving earth, 'a wagon-box, a conveyer for receiving theearth from the scraper and carryin'g the earth to said box,dumping-doors .in the bottom of the box for discharging the earththerefrom, a vehicle having wheels, a driving mechanism operated by saidWheels for driving said conveyer, a manually-operated device forelevating and depressing said scraper, a releasing mechanism for theconveyer, a manual device for operating the mechanism, amanually-operated device for controlling said dumping-doors, a pair ofcylindrical bearings, having' each a reduced portion extending towardeach other through each of the opposite sides of' said box, and eachhaving further reduced portions, a tube connecting said bearings byhaving its ends fitting the respective further reduced portions, an axlefor said Wheels passing through said bearings, tube, and box in adust-proof manner, a ratchetwheel fixed upon said shaft, a ratchetmounted upon a hub of oneof said Vehicle-wheels which is loose upon saidshaft, and a gear-Wheel mounted upon another of said vehicle-wheels, thesaid ratchet engaging the teeth of said ratchet-wheel when the vehicleis drawn forward but riding freely over the teeth when the vehicle movesbackward.

7. In an excavator, the combination of a scraper for digging andreceiving earth, a wagon-box, a conveyer for receiving the earth fromthe scraper and carrying theearth to said box, dumping-doors in thebottom of the box for discharging the earth therefrom, a vehicle havingwheels, a driving mechanism IOO IIO

operated by said wheels for driving said conveyer, a manually-operateddevice for elevating and depressing said scraper, a releasing mechanismfor the conveyer, a manual device for operating the mechanism, amanually-operated device for controlling said dumpingdoors, a pair ofcylindrical bearings, having each a reduced portion extending towardeach other th rough each of the opposite sides of saidI box, and eachhaving further reduced portions, a tube connecting said bearings byhavingits ends fitting the respective further reduced portions, an axlefor said wheels passing through said bearings, tube and box in adustproof manner, a ratchet-wheel fixed upon said shaft, a ratchetmounted upon a hub of one of said vehicle-wheels, which one is looseupon said shaft, and a gear-wheel mounted upon another of saidvehicle-wheels, the said ratchet engaging the teeth of saidratchet-wheel when the vehicle is drawn forward but riding freely overthe teeth when the vehicle moves back-- ward, the conveyer having apinion gearing with said gear-wheel and being adapted to be disengagedtherefrom by the action of one of said manually-operated devices.

8. In an excavator the combination of a wagon-box, vehicle-wheels, ashaft, a ratchetwheel fixed upon said shaft, a ratchet mounted upon ahub of one of said vehicle-wheels, which one is loose upon said shaft,and a gearwheel mounted upon another of said vehiclewheels, the saidratchet engaging the teeth of said ratchet-wheel when the vehicleisdrawn forward but riding freely over the teeth when the vehicle movesbackward.

9. In an excavator, the combination of a vehicle, a containing-boxtherefor, a pair of wheels for the vehicle, a pair of cylindricalbearings, having each a reduced portion extending toward each otherthrough each of the opposite sides of said box, and each having furtherreduced portions, a tube connecting said bearings by having its endsfitting the respective further reduced portions, and an axle for saidwheels passing through said bearings, tube andbox in a dust-proofmanner.

10. In an excavator the combination of a wagon-box, vehicle-wheels, ashaft,`a ratchetwheel fixed upon said shaft, a ratchet mounted upon ahub of one of said vehicle-wheels, which is loose upon said shaft, agear-wheel mounted upon another of said vehicle-wheels, the said ratchetengaging the teeth of said ratchet-wheel when the vehicle is drawnforward but riding freely over the teeth when the vehicle movesbackward, a ring fixed upon said loose hub, of said loose wheel, a lug48 thereon, and a bolt passing through said lug and forming a pivot forsaid ratchet.

11. In an excavator the combination of a carrying-frame, a platform uponits forward end, a wagon-box at its rear end, dumpingdoors at the baseof the box hinged respectively at the front and middle of the box,supporting-chains attached to said doors, a winding-shaft for saidchains, bearings upon the sides of the box, in which bearings said shaftis journaled, a sprocket-wheel on the shaft, a hand-wheel at a distancefrom the shaft, a second sprocket-wheel governed by said handwheel, anda chain connecting the two sprocketwheels.

12. In an excavator the combination of a carrying-frame, a platform uponits forward end, a wagon-box at its rear end, dumpingdoors at the baseof the box hinged respectively at the front and middle of the box,supporting-chainsattached to said doors, a winding-shaft for saidchains, bearings upon the sides of the box, in which bearings said shaftis journaled, a sprocket-wheel on the shaft,

. a hand-wheel at a distance from the shaft, a

second sprocket-wheel governed by said handwheel, a chain connecting thetwo sprocketwheels, bearings having reduced portions passing through thesides of the box, a pipe connecting said bearings, a shaft passingthrough said bearings and pipe, a vehicle-wheel loose upon thelast-named shaft, a clutch operative between the last-named shaft andloose wheel for clutching thel two in one direction of rotation only, agear-wheel mounted upon another vehicle-wheel, and an earth -conveyergoverned by said gear-wheel.

13. In an excavator the combination of a carrying-frame, a platform uponits forward end, a wagon-box at its rear end, dumpingdoors at the baseof the box hinged respectively at the front and middle of the box,supporting-chains attached to said doors, a winding-shaft for saidchains, bearings upon the sides of the box, in which bearings said shaftis journaled, a sprocket-wheel on the shaft, a hand-wheel at a distancefrom the shaft, a second sprocket-wheel governed by said handwheel, achain connecting the two sprocketwheels, beaings having reduced portionspassing through the sides of the box, a pipe connecting said bearings, ashaft passing through said bearings and pipe, a vehiclewheel loose uponthe last-named shaft, a clutch operative between th`e last-named shaftand loose wheel for clutching said loose wheel and lshaft in onedirection of rotation only, a gearwheel mounted upon anothervehicle-wheel, an earth-conveyer governed by sad gearwheel, the meansfor governing the conveyer from the gear-wheel, consisting of a pinionengaging with the latter, a shaft for the pinion` bearings for thelast-named shaft, pivoted arms carrying said bearings, reach-rodspivoted to said arms, and a handle and catch for the reach-rods forthrowing said pinion into and out of engagement with said gear-wheel,said conveyer being a belt driven by said lastnamed shaft.

14. In an excavator, the combination of a wagon-box, bearings havingreduced portions passing through the sides of the box, a pipe,

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connecting said bearings, a shaft passing through said bearings andpipe, a vehiclewheel loose upon the last-named shaft, aclutch operativebetween the last-named shaft and loose wheel for clutching the shaft andloose wheel in one direction of rotation only, a gearwheel mounted uponanother vehicle-wheel, and an earth-conveyer governed by said gearwheel.

15. In an excavator, the combination of a wagon-box, bearings havingreduced portions passing' through the sides of the box, a pipe,connecting said bearings, a shaft passing through said bearings andpipe, a vehiclewheel loose upon the last-named shaft, aclutch operativebetween the last-named shaft and loose wheel for clutching the shaft andloose wheel in one direction of rotation only, agearwheel mounted uponanother vehicle-wheel, an earth-conveyer governed by said gearwheel, themeans for governing the conveyer from the gear-wheel, consisting of apinion engaging with the latter, a shaft for the pinion, bearings forthe last-named shaft, pivoted arms carrying said bearings, reach-rodspivoted to said arms, and a handle and catch for the reach-rods forthrowing said pinion into and out of engagement with said gear-wheel,said conveyer being a belt driven by said lastnamed shaft.

16. In an excavator, the combination of a wagon-box, bearings havingreduced portions passing through the sides of the box, a pipe,connecting said bearings, a shaft passing through said bearings andpipe, a vehiclewheel loose upon the last-named shaft,a clutch operativebetween the last-named shaft and loose wheel for clutching the shaft andloose wheel in one direction of rotation only, a gearwheel mounted uponanother vehicle-wheel, an earth-conveyer governed by said gear- Wheel,the means for governing the conveyer from the gear-wheel, consisting ofa pinion engaging with the-latter, a shaft for the pinion, bearings forthe last-named shaft, pivoted arms carrying said bearings, reach-rodspivoted to said arms, aliandle and catch for the reach-rods for throwingsaid pinion into and out of engagement with said gear-wheel, saidconveyer being a lbelt driven by said last-named shaft, a framesupporting the last-named shaft at one end of the frame and carryingrollers for said belt, a pivot for another portion of said frame, whichconsists of arms having bearings for supporting the ends of two of thecentral rollers, and bent centrally of the vehicle and then runningparallel to each other, and fastened together, and then outwardly againin opposite directions, the bends being for forming recesses, frontwheels for said vehicle, which when steering throws one of the wheelsinto one of the recesses, and a scraper mounted upon said frame-barsbeyond said recesses as measured from said last-named shaft.

17. In an excavator, the combination of a pair of vehicle-wheels, ashafttherefor, agearwheel operative from said shaft, a pinion for engagingwith said gear-wheel, a frame supporting the last-named shaft at one endof the frame and carrying rollers for said belt, a pivot for anotherportion of said frame, which consists of arms having bearings forsupporting the ends of two of the central rollers, and bent centrally ofthe vehicle and then running parallel to each other, and fastenedtogether, and then outwardly again in opposite directions, the bends`being for forming recesses, front wheels for said vehicle which whensteering throws one of the wheels into one of the recesses, a scrapermounted upon said frame-bars beyond said recesses as measured from saidlast-named shaft, and a manually-operative device for throwing saidpinion into and out of engagement with said gear-wheel, said deviceconsisting of pivoted arms carrying the last-named shaft, a handle andcatch therefor, and reach-rods connecting said arms to said handle.

18. In an excavator, the combination of a scraper, a frame consisting oftwo parallel bars and fastened to said scraper and inclined downward, arack with its lower end pivoted to the lower end of said frame, a movingbelt conveyer on the frame at the exit of said scraper, a pivot for theupper end of said frame, a pinion for said rack, a bearing for theLipper end of the rack, a manual device for turning said pinion forelevating and depressing said scraper through the action of said rack,pivoted arms for supporting the upper pivoted end of said frame,reach-rods pivoted to said arms, a manual device for moving said rods todifferent positions, and a catch for locking said rods in theirrespective positions.

Dated this 111th day of December, 1904.

WILLIS B. HARD. [L s] l/Vitnesses:

L. ROY HARD, RIGHD. G. V. MYTToN.

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